I know she's not that loved but I feel like that could be an honest mistake. It could have been in her head as she was a fan and just happened. It's not like it's the most crazy specific lyric ever. Matt Nathanson probably should've tried to talk to her personally before pooping his pants over it. It's not like he's writing Dillinger Escape Plan songs. It's all very derivative of something they liked or heard before, hopefully all somewhat unintentionally. That's how almost all mainstream music is.

I believe the point he is making is it may have been done subconsciously and there was no one to say "hey that's a line already."
When I started learning guitar there was a riff I would jam to with friends that I thought I came up with, only to realize a couple years later it was a Collective Soul song.